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Rubellite and Tanzanite Optical Properties


Tanzanite and Rubellite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Strong: dark red pinkish-redHerve Nicolas Lazzarelli   
Present   

Dispersion
0.02   
22
0.03   
14

Transparency
Transparent, Translucent   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.614-1.666   
1.685-1.707   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.014-0.040   
0.006-0.018   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Rubellite and Tanzanite Optic Character

Rubellite and Tanzanite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Rubellite and Tanzanite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Rubellite and Tanzanite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Rubellite and Tanzanite Transparency

Similar to their colors, Rubellite and Tanzanite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Rubellite is Translucent and Transparent while Rubellite is Translucent and Transparent in appearance.

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